Question

what are the characteristics of coal?​

Answer 1

Answer:

Characteristics of Coal

Anthracite – contains between 86% and 98% carbon by weight and it burns in boilers slowly.

Bituminous – contains between 69% & 86% carbon by weight.

Sub-bituminous – contains less carbon, more water and is a less efficient source of heat for boilers.

Lignite – contains up to 70% water by weight.

Explanation:

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Answer 2

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Coal is a black, inhomogeneous, organic fuel, formed largely from partially decomposed and metamorphosed plant materials. Formation has occurred over long time periods, often under high pressures of overburden and at elevated temperatures.